Construction of heating-stoves.



am 0 V 1 8. P E s D E T E T A P S S U A T S W C 0 4 DO 7 0 NCONSTRUCTION OF HEATING STOVES.

AIPLIOATION FILED MAY 5. 1899.

N0 MODEL.

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I a Ina/era? 00/77 Jazz/ad" Patented September 8, 1903.

PATENT FFICE.

CARL WILHELM s'rAUss, OF BERLIN, GERMANY.

CONSTRUCTION OF HEATlNG-STOVES.

SPECIFICATION forming part of Letters Patent No. 738,640, datedSeptember 8, 1903.

Application filed May 5, 1899. Serial No. 715,748. (No model.)

To all whom it may concern:

Be it known that I, CARL WILHELM STAUSS, engineer, a subject of the Kingof Prussia, German Emperor, residing at Spenerstrasse 23, Berlin,Kingdom of Prussia, German Empire, have invented certain new and usefulImprovements in the Construction of Heating-Stoves, of which thefollowing is a full and complete specification.

This invention liasreference to heatingstoves and the like. Some stovesnowin use are defective in that they render a small part only of theheat generated available for heating purposes, the major portion by farpassing into the chimney. Stoves constructed of iron have the furtherdefect that the parts of the same nearest the fireplace becorne readilyoverheated,

wherefore they are soon destroyed by cracking. Again, as a naturalconsequence of the combustion of the dust on the hot stove theatmosphere in the room soon becomes close and unhealthy, and its use islimited to re mote distances from the stove, the comfort of the latterbeing almost entirely destroyed. Another great defect lies in the factthat the combustion of fuel is accompanied by an ab{ forming a part ofthis speci fication, wherein Figure 1 is a vertical section of a stovecon- ,structed in accordance with my invention,

- the same being taken on linear b, Figs. 2 and 3. Fig. 2 is a verticalsection at right angles to Fig. l, the section being shown the fulllength of the stove, but taken'on the line 0 d of Fig. 3. Fig. 3 is atransverse section on line g h, Fig.2. a Fig. 4 is a transverse sectionon line cf, Fig. 2; and Figs. 5 and 6 are details of constructionhereinafter referred to.

The stove is constructed for self-feeding and continuous heating, butmay also be used for temporary heating. It comprises nels b," theheating-chamber proper, o, with the gas-passage o; the f uel-hopper d,also supported upon said lower part, and the stovecasing c, whichiucloses the upper portion and is provided with a perforated hood.

The stove is supported upon a cast-iron plate 6, provided with feet 6 orthe like, 'the lower edge of the stove being preferably about eightinches above the floor, so that the air is inducted and passes upwardbetween the stove and casing and makes its exit through the perforatedhood 6 The fireplace a, is composed of walls of fireclay surrounded byfour iron plates a, Fig.

4., and provided with the fire-channel b. The front plate has acentrally-located opening for the insertion of feed-pipe f for attachingthe standing grate g and for the slide of the ash-box h. r

The firebricks rest upon a support or grid y, whose horizontal upperplate has an opening to receive a small grate The downwardly extendingWalls Z of this opening form a slide for the passage of the ash-box h.The uppermost fire-brick a has a channel q passing through it, whoseobject will be presently explained. This channel is in a plane elevatedabove that of the fire-channel, and the openings of heat-absorber 0correspond with the openings of the fire-chambers 0, situated above thefire-channels, and are in position to receive the'direct attack of thefire upon them. v

Upon the fire-brick a is supported a kneeshaped plate a, which separatesthe fireplace from the upper portion of the stove and is provided withopenings corresponding to those of the heat-absorber 0, the plate beingsecured to the front grate g at either side of the feed-pipe fin anysuitable manner. The openings in this plate are surrounded by,1'ecessesn, filled with sand, as shown at n a like recess being also provided inthat part of the plate covering the fireplace, as shown extended to forma band m. The plate m is perforated similarly to the knee-shaped plate7?. and carries on its under side projections m which extend into therecesses 97..

with extensions so that by placing the plates alongside of each otherthey form a series of passages s for the gases of combustion.

These plates are united to form an integral body in any suitablemanner-for instance, by bolts or the like.

The fireechambers 0 have vertical partitions 1, so that the gases ofcombustion are forced to come in contact with the whole surface of theheating-body before their escape into the fiue c, the latter beingformed by a partition u. The fire-chambers 0 have openings at their topto facilitate cleaning, the same being closed by a common cover a", asshown. 7

The flue a may be provided at its base with one or more slides 19, whichare intended to be removed during the cleaning of the firechamber. Theaccumulation of dust, &c.,can thus be readily swept into thefire-channel b, from whence it falls into the ash-box 71.. These slidesmay, if desired, be taken out during the preliminary heating to promotea stronger draft, the slides and their guides being of any well-knownconstruction.

The air-channels s are closed above and below and also at their sides inthe middle, but otherwise laterally open above and below (see Figs. 1and 4) for delivering the heated air into the room. The pipe to may beprovided with any suitable damper. In the present instance this is shownas consisting of a flanged disk w, revolnbly mounted in the lower openend of the pipe and operated as indicated at 20 w The plate m, uponwhich rests the heating-body, also supports the fuelhopper d, which isprovided at its base with sanded joints, as described, to exclude thegas therefrom. Between the bottom of the hopper and the plate n isformed a space 01', which affords a free circulation of air, keeps thebottom of the hopper cool, and thus prevents the formation of gasestherein.

In order to prevent an ignition of the coal in the hopper through heatradiation, its feeding-mouth f is not located directly over thefire-chamber, but to one side thereof, and to prevent, further,'anignition of the coal in front of the feeding-mouth the fire-brick alocated opposite the mouth, is made hollow or provided with an opening,as at q, so that it is being continually cooled by the circulation ofair. Directly below this brick is another brick 00, which after the fireis started is heated to a glowing state and reduces the fuel in contactwith it to gas and causing it to ignite, so that the fuel is in aglowing state to the full height of the standing grate g and heats theair, as would an open fire, by heatrays. There is not the slightestdanger of the heating-body becoming red-hot so long as the size of thefireplace is in proper proportion to that of the heating-body, becausethe heat is not concentrated upon it, the intensity of the fire beingweakened by its being split up into numerous currents, and because ofthe continuous change of air in the airchannels 5. The gases ofcombustion are thus cooled down to about 100 Raumur.

It will thus be seen that I have succeeded in producing a superiorstove, the advantages of which will be manifest:

Having thus described my invention, I claim 1. A stove provided with afireplace,divided into a feeding portion and a gas-consuming chamber, aseries of gas-channels above the gas-consuming chamber, a heating-bodysupported above the fireplace having parallel vertical gas-passagesregistering with said channels, a chamber in said heating-body incommunication with the upper gas-passages, and a partition in thechamber-facing, and at a short distance from the discharge ends of theintermediate parallel gas-passages, substantially as described.

2. A stove having a divided fireplace, a hollow overhanging arch orbridge dividing the fireplace into a feed portion and a gas-consumingportion, a horizontal grating, a front standing grating,a grating abovethe fireplace forming a series of parallel gas-passages, a fuel-hoppercommunicating with the feeding portion, a heating-body supported uponthe top grating and having ordinary air and fire chambers, thefire-channels registering with said gas-passages, and a casing inclosingthe

